Lighting Topeak WhiteLite HP 2W

High intensity and long runtime in a lightweight, economical package. Super-bright 2-watt LED provides 18 lux illumination at 10 m. The machined aluminum housing is waterproof and equipped with cooling fins. The rod-mounted Li-Ion rechargeable battery features an on-board RISC processor for 5.5 hours runtime with 30 minutes reserve at 1 watt - 2W - 180 Lumens (Max) / 1W - 90 Lumens / 2W - 72 (Lux/5M) / 1W - 36 (Lux/5M)